Draft-yoke



R'. lJ. COOK. DRAFT You.'4 APPLICATION FILED SEPT. l0, 19H.

' Patentedfmay 3 1921.

UNET sagem ROY J. COOK, 0F CHICAGO, ILLINOIS,

DRAFT-YOKE.

y Specification of Letters Patent.

ASSIGNOR TO GEORGE C. MURRY, OF CHICAGO,

ILLINOIS.

Yieatentea; May s, i921.

Application led September 10, 193.7. Serial No. 190,628.

Y 1o all 'whom it may concer/n."

Be it known that I, Bord. Cook, a citizen of the United States, residing atV Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Draft-Yokes, of which the following is a specication.

This invention relates to improvements in draft yokes, andl has for its object to provide a new and improved construction along the line of that shown in my previous Patent, No. 1,224,278, patented May 1, 1917. The main object of this invention is to provide a yoke which may be readily cast of steel or iron, or the like, and in which a coupler butt may be readily inserted and retained in place, the construction being such as to permit ready assembling and disassembling, as desired.

v In the structure of my patent mentioned above, I utilize two removable filler blocks coacting with inturned ends of the draft yoke and a shouldered coupler butt to transmit draft strains to the draft rigging. In my present invention I am able to eliminate one of these filler blocks without sacrificing any of the advantages of my previous structure, and at the same time I make the structure more easy to assemble and cheaper to manufacture.

These and other objects will be more fully set forth and described in the following specification and4 shown in the accompanying drawing, in which- Figure 1 is a perspective view showing my improved yoke with one form of draft gearing mounted therein, a portion of the yoke and car structure beingshown in section.

Fig.'2 is a transverse vertical section of the same. i

Fig. 3 is a plan view of the yoke, a portion hereof being broken' away, taken along the line 3 of Fig. 4c; and

Fig. 4 is a side elevation of the yoke, showing the coupler butt and filler block in position prior to movement to final operative position.

tion 11C. rIhe forward end is provided with integral side portions 11d extending across between the arms 11a and 11. rIhe latter are formed with inwardly extending shoul-` ders 11e, 11f at top and bottom, respectively, such shoulders being spaced apart asuffi'- cient distance to permit ready insertion therebetween of the coupler butt 10a. On the under side of the arm 11?t of the yoke are the integral ribs 11g, projecting in` wardly from said arm and provided with horizontal under bearing surfacesy 11h, upon which may slide one face of the coupler butt 10a.

A filler block 12 is provided, the same having a shouldered portion 12l at its forward end, and a bearing surface 12b extending rearwardly therefrom, upon which rests the lower face of the coupler-,butt 10a, the shoulder thereof coacting with the shoulder-ed portion 12a rof the filler block. The latter is free to slide upon the lower arm 11b, as is obvious, and when inassembled position, as shown in Fig. 1, this filler block 12 will bear against the shouldered` portion 11r ofthe yoke arm 11b and transmit thereto, as well as to the shoulder 11e, the draftstrains of the draw-barrand coupler mechanism. To provide an increased bearing surface for the filler block under such draft strains, to decrease the possibility of shearing of the filler block, I provide integral lugs 11i on the inner facesof the side portions 11d at the forward end of the yoke, the same extending upwardly A from the lower yoke arm shoulder 11"l to a point substantially at the top of the filler' block shoulder 12a-as shownin dotted lines in Fig. Ll. These lugs 11il provide bearing surfaces at the sides of the shouldered filler block 12 under draft strains and, together'` with the shoulder 11f of the lower yoke arm, receive the draft stress of the draw-bar from the filler block 12. The ribs 11g, at

and lower arms and a hooded forward end, transverse shoulders at the forward ends of said upper and lower arms, a coupler having a shouldered butt adapted to be inserted between said shoulders into said forward end, and van integral shouldered block supported directly von said lowered arm and engaging directly the lower shoulder of said butt, said block being insertible into said hooded end from the rear thereof, after rearward displacement of said coupler, the upper surface of said butt engaging directly the upper arm of said yoke within said hooded end. Y 2. In combination, a yoke having its ends provided with inturned shoulders, a coupler "having a shouldered butt constructed and arranged to readily be inserted between said shoulders, said yoke being further provided with side portions extending between and serving to tie the front ends of said yoke arms, and a removable filler block coasting with one of said shoulders and being itself i shouldered to coact with a shouldered coupler butt to prevent removal of the same when in assembled position and to transmit draft strains therefrom to said yoke arm shoulder, said shouldered coupler butt being in direct contact with the other of said yoke arm shoulders under draft stresses, said yoke arm being further provided with means presenting a bearing surface for said coupler butt and spacing said coupler butt from said last-named shouldered yoke arm, said last-named means being constructed and arranged to prevent vertical displacement of said coupler butt.

3. In combination, a yoke having upper and lower 'arms provided with transverse shoulders at their forward ends and comprising integral side walls unitingthe forward ends of said arms, al draw-bar having a shouldered butt adapted to be inserted between said shoulders nto the hooded end of -said yoke,othe vertical dimension of said shouldered butt being less than the vertical distance between said upper and lower arms of said yoke, and an integral shouldered to coact directly with the wall of said buttv opposite said filler block.

1l. ln combination, a yoke having upper and lower arms provided with transverse shoulders at their forward ends and comprising integral sidewalls uniting the forward ends of said arms, a draw-bar having a shouldered butt adapted to be inserted between said shoulders into the hooded end of said yoke, the vertical dimension of said shouldered butt being less than the vertical distance between said. upper' and lower arms of said yoke, and a shouldered filler block adapted to coact with one shoulder of said draw-bar butt and to engage directly with one of saidshoulders of said yoke, said filler block being' insertible into the hooded end of said yoke from the rear thereof and being adapted to space said butt from one arm of said yoke, the other arm of said yoke being provided with an integral part adapted to coact with said butt and space the same from said other arm.

5. In combination, a yoke having Lipper and lower arms and a hooded forward end, transverse shoulders at the forward ends of said upper and lower arms, a coupler having a shouldered butt adapted to be inserted between said shoulders into said forward end, and an integral block supported directly on said lower arm and engaging directly the lower shoulder of said butt, said Vblock being insertible into said hooded rend from the rear thereof, after rearward displacement of said coupler, the upper surface of said butt engaging directly the Lipper arm of said yoke within said hooded end.

ln testimony whereof, I have vsuloscribed my name.

ROY J. COOK. 

